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Chaco Canyon in New Mexico, and its astronomical rock art
Chaco Canyon aka Chaco Culture National Historical Park, New Mexico, contains astronomical rock art that documents what the people of the time saw in the sky.
November 5, 2021
Artificial intelligence’s racial and gender bias problem
Artificial intelligence sometimes discriminates by race and sex. Rights-based regulations are needed to ensure that AI will not exacerbate inequalities.
October 1, 2021
Fossil footprints are oldest found in Americas
Fossil footprints discovered in White Sands National Park, New Mexico, are the oldest known in the Americas. These footprints date back 23,000 years.
September 29, 2021
Satellites versus stars: Which will dominate the sky?
In the battle of satellites versus stars, the motion of constellations of satellites will draw the eye and drown out the quiet background stars.
September 28, 2021
Einstein’s most famous equation: E=mc2
Einstein's most famous equation describing the relationship of energy and mass, E=mc2, first appeared in a scientific journal on September 27, 1905.
September 26, 2021
Futuristic space concrete uses astronauts’ blood
Scientists in the U.K. have developed a kind of "space concrete" using dust and human blood that could be used for future human habitats on Mars or the moon.
September 23, 2021
Bible story of Sodom revisited. Was it a meteor strike?
The Bible story of Sodom and Gomorrah describes ancient cities destroyed for their wickedness. New research suggests a meteor impact instead.
September 22, 2021
U.S. and China: Cooperation or competition in space?
Between the U.S. and China: Will it be collaboration or competition that defines international space science and exploration in the 21st century?
September 19, 2021
What is time, and why does it move forward?
What is time, and why does it move forward? Cosmologist Thomas Kitching of University College London explains how the arrow of time points to the future.
September 19, 2021
Wildfire threatens a SETI telescope in California
Wildfire threatens a SETI telescope. The Allen Telescope Array in California was built specifically for SETI. Scientists and engineers evacuated.
September 11, 2021
